|
Title
|
|
|
|
An electronic and optically controlled bifunctional transistor based on a bio-nano hybrid complex
|
|
|
Author
|
|
|
|
|
|
|
Abstract
|
|
|
|
| We report an electronically and optically controlled bioelectronic field-effect transistor (FET) based on the hybrid film of photoactive bacteriorhodopsin and electronically conducting single-walled carbon nanotubes (SWNTs). Two-dimensional (2D) crystals of bacteriorhodopsin form the photoactive center of the bio-nano complex, whereas one-dimensional (1D) pure SWNTs provide the required electronic support. The redshift in the Raman spectra indicates the electronic doping with an estimated charge density of 3 X 10(6) cm(-2). The hybrid structure shows a conductivity of 19 mu S/m and semiconducting characteristics due to preferential binding with selective diameters of semiconducting SWNTs. The bioelectronic transistor fabricated using direct laser lithography shows both optical and electronic gating with a significant on/off switch ratio of 8.5 and a photoconductivity of 13.15 mu S/m. An n-type FET shows complementary p- type characteristics under light due to optically controlled, electronic doping by the "proton-pumping" bacteriorhodopsin. The fabricated bioelectronic transistor exhibits both electronically and optically well-controlled bifunctionality based on the functionalized hybrid electronic material. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
ACS Omega
|
|
|
Publication
|
|
|
|
American Chemical Society
,
2020
|
|
|
ISSN
|
|
|
|
2470-1343
|
|
|
DOI
|
|
|
|
10.1021/ACSOMEGA.9B03904
|
|
|
Volume/pages
|
|
|
|
5
:17
(2020)
, p. 9702-9706
|
|
|
ISI
|
|
|
|
000530659700010
|
|
|
Pubmed ID
|
|
|
|
32391456
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|